A filter cloth fixing structure of a sludge dewatering plate-and-frame filter press

Abstract

The utility model provides a kind of sludge dewatering plate frame filter press filter cloth fixing structure. It relates to sludge dewatering equipment technical field. The sludge dewatering plate frame filter press filter cloth fixing structure includes filter plate main body and two filter cloths, two the filter cloths are respectively arranged in the two sides of filter plate main body, the two sides of filter plate main body are all set with rectangular annular pressure groove, the edge of two the filter cloths respectively forms covering to two rectangular annular pressure groove, two the rectangular annular pressure groove are all inserted with rectangular pressure ring, and two the rectangular pressure ring respectively forms extrusion fixation to two filter cloths;The top of two the rectangular pressure ring is all set with multiple embedded position counterbore, the above and below of filter plate main body are all equipped with link piece, the side of two the link pieces mutually close is all fixedly installed with multiple embedded head. The utility model has the advantages of relatively simple installation mode, and fixed stable and reliable.

Description

Technical Field

[0001] This utility model relates to the technical field of sludge dewatering equipment, specifically a filter cloth fixing structure for a sludge dewatering plate and frame filter press. Background Technology

[0002] Plate and frame filter presses are commonly used equipment in sludge dewatering processes. Their core working components include filter plates, filter frames, and filter cloth covering the surfaces of the filter plates and frames. As the filtration medium, the filter cloth directly affects the efficiency of sludge dewatering and the clarity of the filtrate. During the operation of the plate and frame filter press, the filter cloth needs to be stably fixed to the filter plates and frames to prevent displacement, wrinkling, or detachment under pressure. Otherwise, the filter cloth will not seal properly with the filter plates, resulting in sludge and liquid leakage. This not only reduces dewatering efficiency but also contaminates the equipment and working environment, increasing the workload of subsequent cleaning and maintenance.

[0003] Currently, the main method for fixing filter cloth in existing plate and frame filter presses is to tie it with ropes, that is, to tie the edge of the filter cloth to the frame of the filter plate or filter frame with ropes. However, this fixing method has obvious drawbacks: the rope tying operation is cumbersome, the fixing efficiency is low, and the tightness of the rope is difficult to control evenly. After long-term use, the rope is prone to wear and breakage, resulting in the failure of filter cloth fixing.

[0004] Therefore, it is necessary to provide a new filter cloth fixing structure for sludge dewatering plate and frame filter presses to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a filter cloth fixing structure for sludge dewatering plate and frame filter presses that is relatively simple to install and has a stable and reliable fixing method.

[0006] To solve the above-mentioned technical problems, the filter cloth fixing structure for a sludge dewatering plate and frame filter press provided by this utility model includes: a filter plate body and two filter cloths. The two filter cloths are respectively disposed on both sides of the filter plate body. Rectangular annular pressure grooves are opened on both sides of the filter plate body. The edges of the two filter cloths cover the two rectangular annular pressure grooves respectively. Rectangular pressure rings are inserted into the two rectangular annular pressure grooves, and the two rectangular pressure rings respectively compress and fix the two filter cloths. Multiple recessed holes are opened on the top of the two rectangular pressure rings. Connecting pieces are provided above and below the filter plate body. Multiple fitting heads are fixedly installed on the side of the two connecting pieces that are close to each other. The ends of the multiple fitting heads extend into the multiple recessed holes respectively, and the multiple fitting heads are slidably connected to the filter plate body.

[0007] Furthermore, an outer bracket is fixedly installed on one side of the filter plate body, and a double-ended screw is rotatably installed inside the outer bracket. Two connecting strips are threaded onto the double-ended screw. A first connecting post and a second connecting post are fixedly installed on the opposite sides of the two connecting strips. The first connecting post and the second connecting post are slidably connected to the top and bottom of the outer bracket, respectively. The first connecting post is located above the second connecting post. A rectangular connecting sleeve is fixedly installed at the top of the first connecting post. The top of the rectangular connecting sleeve is connected to the corresponding connecting piece. The bottom of the second connecting post is connected to the corresponding connecting piece.

[0008] Furthermore, assembly blocks are fixedly installed on the top of the rectangular connecting sleeve and the bottom of the second connecting post. Dovetail grooves are provided on the side of the two assembly blocks that are far apart from each other. The side of the two dovetail grooves that are close to the connecting piece is set as an opening. Dovetail blocks are provided in the two dovetail grooves. One side of the two connecting pieces is fixedly connected to the corresponding dovetail blocks.

[0009] Furthermore, each of the two dovetail blocks has a locking groove on the side away from the connecting piece, and each of the two assembly blocks has a mounting bracket fixedly installed on the side away from the connecting piece. Each of the two mounting brackets has a bolt threaded on it, and each of the two bolts has a locking rod rotatably installed at the end near the assembly block. The ends of the two locking rods extend into the corresponding locking grooves, and the two locking rods are slidably connected to the two assembly blocks respectively.

[0010] Furthermore, a rotating wheel is fixedly installed at the top of the double-ended screw, and the rotating wheel is provided with anti-slip texture. A protrusion is fixedly installed at the top of the outer bracket, and a set screw is threaded on the protrusion. One end of the set screw abuts against the double-ended screw, and the other end is provided with an internal hexagonal countersunk groove.

[0011] Furthermore, the two rectangular pressure rings are respectively flush with the two sides of the filter plate body.

[0012] Compared with related technologies, the filter cloth fixing structure for sludge dewatering plate and frame filter presses provided by this utility model has the following beneficial effects: I. This utility model uses a rectangular pressure ring and a rectangular annular pressure groove for pre-fixation, combined with a connecting piece, a fitting head and a recessed countersunk hole for precise locking. The double fixing structure can firmly restrict the position of the filter cloth. On the one hand, it can prevent the filter cloth from shifting due to pressure during filtration, ensuring complete coverage of the filtration area and improving the dewatering effect. On the other hand, compared with the traditional rope binding method, this method is faster and more stable. Second, this utility model uses a sliding assembly design of dovetail block and dovetail groove, combined with a quick locking / unlocking structure of bolts and levers, to easily disassemble the connecting piece and remove the rectangular pressure ring, which greatly shortens the filter cloth replacement time and reduces maintenance costs. In addition, this detachable method allows the connecting piece to be carried or produced separately. Attached Figure Description

[0013] Figure 1 A schematic diagram of a preferred embodiment of the filter cloth fixing structure for a sludge dewatering plate and frame filter press provided by this utility model; Figure 2 This is a schematic diagram of the rear structure of this utility model; Figure 3 This is a schematic diagram of the exploded structure of this utility model; Figure 4 This is a schematic diagram of the assembly of the outer support and connecting piece in this utility model; Figure 5 This is a schematic diagram of the rectangular annular pressure groove in this utility model; Figure 6 This is a schematic diagram of the dovetail block in this utility model; Figure 7 This is a schematic diagram of the assembly block in this utility model.

[0014] The following are the labeling elements in the diagram: 1. Filter plate body; 2. Filter cloth; 3. Rectangular annular groove; 4. Rectangular pressure ring; 5. Countersunk hole; 6. Connecting piece; 7. Fitting head; 8. Outer support; 9. Double-ended screw; 10. Connecting strip; 11. First connecting post; 12. Second connecting post; 13. Rectangular connecting sleeve; 14. Assembly block; 15. Dovetail groove; 16. Dovetail block; 17. Locking groove; 18. Mounting bracket; 19. Bolt; 20. Locking rod. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Please refer to the following: Figures 1-7 .

[0017] The filter cloth fixing structure of the sludge dewatering plate and frame filter press includes a filter plate body 1 and two filter cloths 2. The two filter cloths 2 are respectively arranged on both sides of the filter plate body 1, and rectangular annular pressure grooves 3 are opened on both sides of the filter plate body 1. The edges of the two filter cloths 2 cover the two rectangular annular pressure grooves 3, and rectangular pressure rings 4 are inserted into the two rectangular annular pressure grooves 3. The two rectangular pressure rings 4 squeeze and fix the two filter cloths 2, thus initially fixing the filter cloths 2. In this case, the two rectangular pressure rings 4 are flush with the two sides of the filter plate body 1, avoiding the shadow of the pressure ring protrusion. The overall assembly of the frame filter press ensures that the fixed structure is compatible with the original operating system of the equipment and does not interfere with normal filtration operations. Multiple recessed holes 5 are opened on the top of the two rectangular pressure rings 4. Connecting pieces 6 are provided above and below the filter plate body 1. Multiple fitting heads 7 are fixedly installed on the side of the two connecting pieces 6 that are close to each other. The ends of the multiple fitting heads 7 extend into the multiple recessed holes 5, and the multiple fitting heads 7 are slidably connected to the filter plate body 1. Through the insertion effect between the fitting heads 7 and the recessed holes 5, the filter cloth 2 is further stably fixed on the filter plate body 1.

[0018] In this embodiment, to facilitate the synchronous operation of the two connecting pieces 6, an outer bracket 8 is fixedly installed on one side of the filter plate body 1, and a double-ended screw 9 is rotatably installed inside it. Two connecting strips 10 are threaded on the double-ended screw 9. A first connecting post 11 and a second connecting post 12 are fixedly installed on the opposite sides of the two connecting strips 10. The first connecting post 11 and the second connecting post 12 are slidably connected to the top and bottom of the outer bracket 8, respectively. The first connecting post 11 is located above the second connecting post 12. A rectangular connecting sleeve 13 is fixedly installed at the top of the first connecting post 11. The top of the rectangular connecting sleeve 13 is connected to the corresponding connecting piece 6. The bottom of the second connecting post 12 is connected to the corresponding connecting piece 6. By rotating the double-ended screw 9, the two connecting pieces 6 can be moved synchronously, thereby quickly bringing multiple fitting heads 7 into the corresponding recessed holes 5. In addition, the design of the rectangular connecting sleeve 13 provides sufficient installation and movement space in the middle, without hindering the installation of the support ears on both sides of the filter plate body 1.

[0019] In the above method, to facilitate the replacement of the filter cloth 2 and for easy assembly and carrying, assembly blocks 14 are fixedly installed on the top of the rectangular connecting sleeve 13 and the bottom of the second connecting post 12. Dovetail grooves 15 are provided on the sides of the two assembly blocks 14 that are away from each other. The sides of the two dovetail grooves 15 near the connecting piece 6 are open. Dovetail blocks 16 are provided within the two dovetail grooves 15. One side of each of the two connecting pieces 6 is fixedly connected to the corresponding dovetail block 16. A locking groove 17 is provided on the side of each of the two dovetail blocks 16 that is away from the connecting piece 6. Each assembly block 14 has a mounting bracket 18 fixedly installed on the side away from the connecting piece 6. Each mounting bracket 18 has a bolt 19 threaded on it. Each bolt 19 has a locking rod 20 rotatably installed at the end near the assembly block 14. The ends of the two locking rods 20 extend into the corresponding locking grooves 17, and the two locking rods 20 are slidably connected to the two assembly blocks 14 respectively. By making the connection piece 6 and the assembly block 14 detachable, the filter cloth 2 can be easily replaced, and it can be easily carried, assembled and produced separately, which improves convenience.

[0020] In the above method, in order to prevent the double-ended screw 9 from rotating, a rotating wheel is fixedly installed at the top of the double-ended screw 9. The rotating wheel is provided with anti-slip texture. A protrusion is fixedly installed at the top of the outer bracket 8. A set screw is threaded on the protrusion. One end of the set screw abuts against the double-ended screw 9, and the other end is provided with an internal hexagonal recess.

[0021] The working principle of the filter cloth fixing structure for the sludge dewatering plate and frame filter press provided by this utility model is as follows: In the initial state, the fitting head 7 does not enter the rectangular annular pressure groove 3; When fixing the filter cloth 2, first lay the two filter cloths 2 on both sides of the filter plate body 1 to ensure that the filter cloth 2 can completely cover the filtration area of ​​the filter plate body 1. At the same time, align the edge of the filter cloth 2 with the pre-set rectangular annular pressure grooves 3 on both sides of the filter plate body 1. Then, insert the two rectangular pressure rings 4 into the corresponding rectangular annular pressure grooves 3. The rectangular pressure rings 4 will squeeze the edge of the filter cloth 2, initially restricting the filter cloth 2 between the filter plate body 1 and the rectangular pressure rings 4, thus achieving the pre-fixation of the filter cloth 2. At this time, the rectangular pressure rings 4 are flush with the two sides of the filter plate body 1, which can prevent the pressure rings from protruding and affecting the subsequent overall assembly and filtration operation of the plate and frame filter press. Next, in order to strengthen the fixing effect of filter cloth 2, the rectangular pressure ring 4 needs to be positioned and locked by the cooperation of connecting piece 6 and fitting head 7. The specific operation is to first rotate the double-headed screw 9 clockwise, and the two connecting strips 10 move closer to each other, so that the two connecting pieces 6 move in the direction of moving closer to each other. Multiple fitting heads 7 move towards their respective corresponding recessed holes 5 until multiple fitting heads 7 are inserted into their corresponding recessed holes 5. Then, use an Allen wrench to tighten the set screw to complete the fixing and strengthening of filter cloth 2. In subsequent use, to facilitate the replacement of filter cloth 2 after long-term use, first loosen bolt 19, drive the locking rod 20 out of the locking groove 17, then slide the dovetail block 16 out from the open end of the dovetail groove 15, so that the fitting head 7 is separated from the locking countersunk hole 5, and the connecting piece 6 can be removed. Then take out the rectangular pressure ring 4 to complete the replacement of filter cloth 2. After replacement, reassemble according to the reverse steps to restore the operation of the equipment. In addition, the connector 6 can be disassembled separately, which makes it convenient to install, carry or replace each component individually.

[0022] Compared with related technologies, the filter cloth fixing structure for sludge dewatering plate and frame filter presses provided by this utility model has the following beneficial effects: I. This utility model uses the compression pre-fixation of rectangular pressure ring 4 and rectangular annular pressure groove 3, combined with the precise locking of connecting piece 6, fitting head 7 and positioning countersunk hole 5, the double fixing structure can firmly restrict the position of filter cloth 2. On the one hand, it can prevent the filter cloth 2 from shifting due to pressure during filtration, ensure complete coverage of the filtration area and improve the dewatering effect. On the other hand, compared with the traditional rope binding method, this method is faster and more stable. Second, this utility model uses the sliding assembly design of dovetail block 16 and dovetail groove 15, combined with the quick locking / unlocking structure of bolt 19 and clamp 20, to easily disassemble the connecting piece 6 and remove the rectangular pressure ring 4, which greatly shortens the filter cloth 2 replacement time and reduces maintenance costs. In addition, this detachable method allows the connecting piece 6 to be carried or produced separately.

[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A filter cloth fixing structure for a sludge dewatering plate and frame filter press, comprising a filter plate body and two filter cloths, wherein the two filter cloths are respectively disposed on both sides of the filter plate body, characterized in that, Both sides of the filter plate body are provided with rectangular annular pressure grooves. The edges of the two filter cloths cover the two rectangular annular pressure grooves respectively. Rectangular pressure rings are inserted into the two rectangular annular pressure grooves respectively, and the two rectangular pressure rings squeeze and fix the two filter cloths respectively. The top of each of the two rectangular pressure rings is provided with multiple recessed holes. Connecting pieces are provided above and below the filter plate body. Multiple fitting heads are fixedly installed on the side of each of the two connecting pieces that are close to each other. The ends of the multiple fitting heads extend into the multiple recessed holes, and the multiple fitting heads are slidably connected to the filter plate body.

2. The filter cloth fixing structure for a sludge dewatering plate and frame filter press according to claim 1, characterized in that, An outer bracket is fixedly installed on one side of the filter plate body. A double-ended screw is rotatably installed inside the outer bracket. Two connecting strips are threaded onto the double-ended screw. A first connecting post and a second connecting post are fixedly installed on the opposite sides of the two connecting strips. The first connecting post and the second connecting post are slidably connected to the top and bottom of the outer bracket, respectively. The first connecting post is located above the second connecting post. A rectangular connecting sleeve is fixedly installed at the top of the first connecting post. The top of the rectangular connecting sleeve is connected to the corresponding connecting piece. The bottom of the second connecting post is connected to the corresponding connecting piece.

3. The filter cloth fixing structure for a sludge dewatering plate and frame filter press according to claim 2, characterized in that, Assembly blocks are fixedly installed on the top of the rectangular connecting sleeve and the bottom of the second connecting post. Dovetail grooves are opened on the side of the two assembly blocks that are far apart from each other. The side of the two dovetail grooves that are close to the connecting piece is set as an opening. Dovetail blocks are provided in the two dovetail grooves. One side of the two connecting pieces is fixedly connected to the corresponding dovetail blocks.

4. The filter cloth fixing structure for a sludge dewatering plate and frame filter press according to claim 3, characterized in that, Both dovetail blocks have a locking groove on the side away from the connecting piece. Both assembly blocks have a mounting bracket fixedly installed on the side away from the connecting piece. Both mounting brackets have bolts threaded on them. Both bolts have a locking rod rotatably installed at the end near the assembly block. The ends of both locking rods extend into the corresponding locking grooves, and the two locking rods are slidably connected to the two assembly blocks respectively.

5. The filter cloth fixing structure for a sludge dewatering plate and frame filter press according to claim 2, characterized in that, A rotating wheel is fixedly installed at the top of the double-ended screw, and the rotating wheel has anti-slip texture. A protrusion is fixedly installed at the top of the outer bracket, and a set screw is threaded on the protrusion. One end of the set screw abuts against the double-ended screw, and the other end has an internal hexagonal recess.

6. The filter cloth fixing structure for a sludge dewatering plate and frame filter press according to claim 1, characterized in that, The two rectangular pressure rings are flush with the two sides of the filter plate body, respectively.

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